Roofing Terminology – A-Z Guide

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    Our A – Z of roofing terminology takes the mystery out of roofing trade terms, and helps you better understand how roofing works. Whether you choose to do the repairs yourself or hire a roofing contractor to work on your roof, knowing the common roofing terms will help you to understand what needs to be done and why, and benefit you with the knowledge when reviewing a roofing quotation. Here are some of the most common roofing terms and their definitions.

    ANTICON BLANKET

    Installed above the battens directly underneath the roof sheeting. It is a lightweight glass wool insulation blanket adhered to a water-resistant reflective foil. Keeps your home cooler in summer and prevents heat loss in winter, it also reduces rain noise.

    APEX

    The highest point of your roof, it’s the points where the two slopes of the roof meet at the ridge.

    BARGE CAPPING

    A flashing that is used to fix the gable end of the roof where the colorbond sheets start and finish, providing a neat finish.

    BATTEN

    A batten is a piece of timber or metal channel installed horizontally on top of the rafters to allow sheet metal to be laid and fastened.

    BMT

    Base Metal Thickness is a term which is the thickness of the steel before the zincalume protective layer is applied and the colorbond paint layer is added.

    BAY WINDOW

    Is a term for all protruding window constructions, forming a recess in a room.

    BOX GUTTER

    Is a rain gutter on a roof concealed between the slopes of a roof.

    CLADDING

    Is the application of one material over another, it’s purpose is to provide a degree of thermal insulation and weather resistance, and to improve the appearance of buildings.

    COLORBOND®

    COLORBOND® steel is produced with a ZINCALUME® base to provide corrosion resistance and then covered with a chemically applied conversion layer to enhance coating adhesion. On top of this goes a baked on epoxy primer and finally a baked on exterior grade top-coat.

    DOWNPIPE

    A pipe for carrying rainwater from a roof gutter to the ground or to a drain.

    EAVES

    The lower part of a roof that overhangs the face of a wall, normally on the outside.

    FALL

    The slope or pitch of a roof or gutter.

    FASCIA

    Is a horizontal board, which caps off the ends of the rafters, to which guttering is fixed.

    FASTENERS

    Are used to secure various components of your roof, this includes nails, screws, clips and bolts,

    FINIAL

    Is a distinctive section or pointed ornament at the top of the apex of the roof.

    FIRE RATING OR R – VALUE

    Is a value given for the measure of resistance to heat flow a roof or wall. In theory, the higher the R-value, the greater that resistance.

    FLASHING

    Components used to weatherproof or seal the roof system edges at the perimeters, penetrations, walls and other places, such as vent-pipes, chimneys, valleys and joints at vertical walls.

    GABLE

    The triangular section of wall at the end of a pitched roof, extending from the eaves to the peak.

    GUTTER

    A shallow trough that is fixed beneath the edge of a roof for carrying off rainwater. T

    GUTTER GUARD

    Various systems are available, gutter guard is installed over the gutter to prevent gutters clogging from leaves and other debris.

    HIP

    The sharp edge of a roof from the ridge to the eaves where the two sides meet.

    HIPPED ROOF

    Hip roofs (or hipped roofs) have slopes on four sides, the offer strength, and excellent resistance to strong winds.

    PARAPET WALL

    Is a barrier which is an extension of the wall at the edge of a roof, it extends above the roof line.

    RAFTER

    A rafter is a parallel beam that supports the roof and is part of the truss. It is the principal support for roofing materials.

    RAINWATER HEAD

    Is a box-shaped structure of metal into which water from a gutter or parapet is collected and discharged into a downpipe. It acts as an external overflow point to minimise water surges into the storm water system and aid the flow of water down the downpipe.

    RIDGE

    The highest point on the roof, represented by a horizontal line where two roof areas intersect, running the length of the area.

    ROOF PITCH

    The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally, usually expressed in degrees.

    ROOF TRUSS

    The structural framework designed to carry the loads of a roof and it’s covering over the full span without intermediate support.

    SAFETY RAIL

    Is a Workplace Health and Safety requirement. Controls measures must be used under law for working at heights. It is installed to areas where you can fall from one height to another.

    SARKING

    Is a moisture proof foil material that is placed over the roof battens and installed beneath the external roof covering (eg tiles or metal).

    SCAFFOLDING

    A temporary structure specifically used to support access platforms or working platforms.

    SKILLION

    A roof shape is different from a standard flat roof. It has a steeper and more noticeable pitch. A skillion roof is also commonly known as a shed roof.

    SKYLIGHT

    A glazed window or translucent roof section fitted parallel to the roof slope to admit light.

    SOFFIT

    The material used as a lining which is installed under the eaves between the fascia board and external wall.

    VALLEY

    Is the V shaped metal channel that are formed by two inclined slopes of a roof.

    WHIRLY BIRD

    Are a type of semi-mechanical vent that is installed on the roof of a house to help remove heat from the ceiling cavity.

    ZINCALUME®

    ZINCALUME® is a steel that is a durable, strong roof cladding with superior corrosion resistance, available in different profiles.

    WANT TO KNOW MORE?

    Would you like to learn more about roofing terms on your quote? Or compare a quote to ensure you are getting the best value? Contact Gutter and Roof Repairs Brisbane today and we’ll be happy to discuss your roof issues further.

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